MERGE statement syntax modified

This is probably known to all but I've just found out - MERGE command syntax had been modified since CTP6. In the beginning of 2008 I had built a system on CTP6 and this week, while preparing for production deployment, found out that procedures are failing with syntax error. It appears that in CTP6 MERGE contained the following blocks:

WHEN MATCHED

WHEN [TARGET] NOT MATCHED

WHEN SOURCE NOT MATCHED

In RTM, if you write WHEN TARGET NOT MATCHED, it fails compilation. New syntax is:

WHEN MATCHED

WHEN NOT MATCHED [BY TARGET]

WHEN NOT MATCHED BY SOURCE

For non-believers, here is old blog post by Chad Boyd with examples that use old syntax.